57 lines
No EOL
1.8 KiB
GLSL
57 lines
No EOL
1.8 KiB
GLSL
#include "../../sampler.glsl"
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/*
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contributors: Patricio Gonzalez Vivo
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description: Get material normal property from GlslViewer's defines https://github.com/patriciogonzalezvivo/glslViewer/wiki/GlslViewer-DEFINES#material-defines
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use: vec4 materialNormal()
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options:
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- SAMPLER_FNC(TEX, UV): optional depending the target version of GLSL (texture2D(...) or texture(...))
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license:
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- Copyright (c) 2021 Patricio Gonzalez Vivo under Prosperity License - https://prosperitylicense.com/versions/3.0.0
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- Copyright (c) 2021 Patricio Gonzalez Vivo under Patron License - https://lygia.xyz/license
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*/
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#ifndef FNC_MATERIAL_NORMAL
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#define FNC_MATERIAL_NORMAL
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#ifdef MATERIAL_NORMALMAP
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uniform SAMPLER_TYPE MATERIAL_NORMALMAP;
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#endif
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#ifdef MATERIAL_BUMPMAP_NORMALMAP
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uniform SAMPLER_TYPE MATERIAL_BUMPMAP_NORMALMAP;
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#endif
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vec3 materialNormal() {
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vec3 normal = vec3(0.0, 0.0, 1.0);
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#ifdef MODEL_VERTEX_NORMAL
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normal = v_normal;
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#if defined(MODEL_VERTEX_TANGENT) && defined(MODEL_VERTEX_TEXCOORD) && defined(MATERIAL_NORMALMAP)
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vec2 uv = v_texcoord.xy;
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#if defined(MATERIAL_NORMALMAP_OFFSET)
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uv += (MATERIAL_NORMALMAP_OFFSET).xy;
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#endif
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#if defined(MATERIAL_NORMALMAP_SCALE)
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uv *= (MATERIAL_NORMALMAP_SCALE).xy;
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#endif
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normal = SAMPLER_FNC(MATERIAL_NORMALMAP, uv).xyz;
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normal = v_tangentToWorld * (normal * 2.0 - 1.0);
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#elif defined(MODEL_VERTEX_TANGENT) && defined(MODEL_VERTEX_TEXCOORD) && defined(MATERIAL_BUMPMAP_NORMALMAP)
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vec2 uv = v_texcoord.xy;
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#if defined(MATERIAL_BUMPMAP_OFFSET)
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uv += (MATERIAL_BUMPMAP_OFFSET).xy;
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#endif
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#if defined(MATERIAL_BUMPMAP_SCALE)
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uv *= (MATERIAL_BUMPMAP_SCALE).xy;
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#endif
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normal = v_tangentToWorld * ( SAMPLER_FNC(MATERIAL_BUMPMAP_NORMALMAP, uv).xyz * 2.0 - 1.0) ;
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#endif
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#endif
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return normal;
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}
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#endif |